SB20260815238 - Use-after-free in Linux kernel gpib common driver
Published: August 15, 2026
Security Bulletin ID
SB20260815238
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Use-after-free (CVE-ID: CVE-2026-72482)
CWE-ID: CWE-416 - Use After Free
CVSSv4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a local user to trigger a use-after-free.
The vulnerability exists due to a double decrement leading to a use-after-free condition in command_ioctl() when handling IO ioctl operations on gpib descriptors. A local user can trigger an error path during ioctl processing to trigger a use-after-free.
Exploitation requires a concurrent close_dev_ioctl() operation on an actively used descriptor.
Remediation
Install update from vendor's website.